It is sometimes required to XOG out only a particular sub-object or sub-sub-object in a multiple layered hierarchy without touching others. The issue is evident for the following case.

Case:

A system A has an object which has child objects and grandchild objects. The structure has been exported to other system B and it is in use. In system A, there are, for example, two grandchildren, GrandchildA and GrandchildB. A new grandchild, GrandchildC is added. It is required to export only newly added GrandchildC to the system B without touching other object at all.